Caught jerking off by My Stepsister and I made Her Cum to

I didn't realize that my step sister was watching me masterbate in a pair of Her pantyhose until I came. She walked in and knew I was embarrassed from trying to cover up quickly. She told me how turned on she was watching and playing with herself but I had cum before she could climax. Her asking if I would touch her pussy and make her cum too was something I never thought I would hear. I still can't believe off wet she got from me touching her. Her orgasm was incredible.